https://doi.org/10.1007/s100529900187
Theoretical physics
Production of top quark pairs in association with a hard gluon to order 
Institut für Theoretische Physik, RWTH Aachen, D-52056 Aachen, Germany
, DE
Received:
7
April
1999
Published online:
12
August
1999
The production of top quark pairs accompanied by a hard gluon in 
annihilation is studied including next-to-leading order corrections in the strong coupling. At leading order, the fraction r of 
events with respect to all 
events is computed analytically as a function of the minimal gluon energy. Next-to-leading order results for r are given for center-of-mass energies of 0.5 and 1 TeV. We further calculate the differential distribution of r with respect to several variables, including the top quark energy and the invariant mass. We then investigate how our results depend on the choice of the renormalization scheme for the top quark mass by comparing results expressed in terms of either the pole mass or the 
mass. Finally we estimate the sensitivity of the fraction r on the value of the running top quark mass at a scale of 1 TeV.
© Springer-Verlag Berlin Heidelberg, 1999
